Ac fan

Reply

  #1  
Old 08-12-12, 09:57 AM
R
Member
Thread Starter
Join Date: Apr 2003
Location: USA
Posts: 118
Received 0 Votes on 0 Posts
Ac fan

Folks:
I have central air conditioning in my house.The air compressor is outside
and the air handler is in my attic.They are approx.eight years old.The system
worked fine until last night.When the temperature is satisfied the compressor
unit shuts down but the fan in the air handler does not.I changed the programmable thermostat but the fan still won't shut off.I would appreciate
any and all suggestions to fix this.Thank you in advance. Ron
 
Sponsored Links
  #2  
Old 08-12-12, 10:01 AM
hvactechfw's Avatar
Member
Join Date: Jan 2011
Posts: 6,245
Received 2 Votes on 2 Posts
sounds like the blower relay is stuck, but to be sure remove t-stat from wall and disconnect wire on G terminal. Does the fan shut off? If yes, then you need a thermostat, if no, then you need to check the air handler.
 
  #3  
Old 08-12-12, 10:14 AM
R
Member
Thread Starter
Join Date: Apr 2003
Location: USA
Posts: 118
Received 0 Votes on 0 Posts
Thank you for your reply.I removed the green wire fan didn't shut off.Were
would I find the blower relay and how to I test it. Ron
 
  #4  
Old 08-12-12, 10:16 AM
hvactechfw's Avatar
Member
Join Date: Jan 2011
Posts: 6,245
Received 2 Votes on 2 Posts
the relay may be part of a control board in your air handler, or it may be by itself. First thing I need is the make and model number of the air handler.
 
  #5  
Old 08-14-12, 10:20 AM
R
Member
Thread Starter
Join Date: Apr 2003
Location: USA
Posts: 118
Received 0 Votes on 0 Posts
Ac fan to hvactechfw

Finally got someone to climb into attic.The air handler is a carrier.The data
plate was hard to read hope this is right FB4NI 036. THE PART NUMBER WAS
319081 7013 That number was easy.Thanks again for your help Ron
 
  #6  
Old 08-14-12, 06:02 PM
hvactechfw's Avatar
Member
Join Date: Jan 2011
Posts: 6,245
Received 2 Votes on 2 Posts
I cant find anything on your air handler. You will need to take the covers off the ahu and locate either the control board or the fan relay and get numbers off of it.
 
  #7  
Old 08-14-12, 08:06 PM
Houston204's Avatar
Forum Topic Moderator
Join Date: Oct 2009
Location: Texas
Posts: 7,423
Received 17 Votes on 14 Posts
http://www.docs.hvacpartners.com/idc...t/fa4a-4si.pdf

The FB4A will have the 4 inch by 4 inch circuit board.


What heat strip do you have in this air handler?
Does it have a heat sequencer?

 
  #8  
Old 08-14-12, 08:16 PM
R
Member
Thread Starter
Join Date: Apr 2003
Location: USA
Posts: 118
Received 0 Votes on 0 Posts
Ac fan

Sorry I don't know what a heat strip is.Ron
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: